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Chip-scale optical Clock Based on Modulation Transfer Spectroscopy

Chip-scale Optical Clock Based on Modulation Transfer Spectr...

2023 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2023

作者： Yang, Qiaohui Liu, Tianyu Miao, Jie Pan, Duo Chen, Jingbiao Peking University State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronics Beijing100871 China

ISBN: (纸本)9798350311426

We propose a scheme for realizing a chip-scale optical clock based on modulation transfer spectroscopy. By using on-chip laser, lithium niobate thin film waveguides and MEMS cells, the laser frequency can be stabilized at the hyperfine transition of rubidium atomic line. In this way, the volume and power consumption of the optical clock can be greatly reduced while the performance is guaranteed. © 2023 IEEE.

关键词： chip-scale optical clock compact optical frequency standard frequency stability lithium niobate modulators modulation transfer spectroscopy

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Single-Wavelength Net 1 Tb/s Transmission in SMF and 6.4 Tb/s in Weakly-Coupled 7-Core MCF Using a Phase- and Polarization-Diverse Direct Detection Receiver in Jones space

Single-Wavelength Net 1 Tb/s Transmission in SMF and 6.4 Tb/...

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2023 Opto-Electronics and Communications Conference, OECC 2023

作者： Wu, Qi Li, Xueyang Zhu, Yixiao Cheng, Chen Xu, Zhaopeng Li, Jiali He, Zhixue Hu, Weisheng Peng Cheng Laboratory Shenzhen518000 China Shanghai Jiao Tong University State Key Laboratory of Advanced Optical Communication System and Networks Department of Electronic Engineering Shanghai200240 China

ISBN: (纸本)9781665462136

We demonstrate a record single-wavelength net 1.04-Tb/s transmission over 40-km SMF using 56.5-GHz Jones-space direct-detection receiver with the highest electrical spectral efficiency of 18.4 b/s/Hz. Using the 42-km weakly-coupled 7-core multi-core fiber, we achieve a net 6.49-Tb/s signal transmission for large-scale and high-capacity data center interconnects. © 2023 IEEE.

关键词： Spectrum efficiency

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Photonic Micro-Ring Tensor Core for Parallel and Shared Batch Processing

Photonic Micro-Ring Tensor Core for Parallel and Shared Batc...

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2023 optical Fiber Communications Conference and Exhibition, OFC 2023

作者： Jiang, Yue Zhang, Wenjia Liu, Xuying He, Zuyuan Shanghai Jiao Tong University State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai200240 China

We propose and experimentally demonstrate a batch dimension processing scheme based on the micro-ring weighting bank, which can at least quadruple the computing capability of the photonic tensor core without extra wei... 详细信息

ISBN: (纸本)9781957171180

关键词： Tensors

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Generalized Carrier Assisted Differential Detection Receiver with Simplest Structure

Generalized Carrier Assisted Differential Detection Receiver...

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2022 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2022

作者： Zhu, Yixiao Hu, Weisheng State Key Laboratory of Advanced Optical Communication System and Networks Shanghai Jiao Tong University Shanghai200240 China

We propose a generalized carrier assisted differential detection receiver featuring simplest structure of 2×2 optical coupler and 2 single-ended photodiodes. The performance of the designed receiver is comprehens...

ISBN: (纸本)9798350350012

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Digital Coherent Fronthual Employing Sample Bits Interleaving and Uneven 16-QAM 20

Digital Coherent Fronthual Employing Sample Bits Interleavin...

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20th International Conference on optical Communications and networks, ICOCN 2022

作者： Chen, Xi Li, Jiaji Zhu, Yixiao Yin, Longjie Zhuge, Qunbi Hu, Weisheng State Key Laboratory of Advanced Optical Communication System and Networks Shanghai Jiao Tong University Shanghai200240 China

We propose and experimentally demonstrate a digital coherent fronthaul system exploiting sample bits interleaving and uneven 16-QAM. The results indicate that 6dB EVM sensitivity enhancement can be achieved compared w... 详细信息

ISBN: (数字)9781665458986

ISBN: (纸本)9781665458986

关键词： Wireless communication Wireless sensor networks Sensitivity OFDM Symbols optical fiber communication Reliability

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MZM Nonlinearity Enabled Uneven PAM-4 for EVM Reduction in Digital Mobile Fronthaul 20

MZM Nonlinearity Enabled Uneven PAM-4 for EVM Reduction in D...

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20th International Conference on optical Communications and networks, ICOCN 2022

作者： Li, Jiaji Chen, Xi Wu, Jiahao Zhu, Yixiao Hu, Weisheng Shanghai Jiao Tong University State Key Laboratory of Advanced Optical Communication System and Networks Shanghai200240 China

We propose and experimentally demonstrate a digital mobile fronthaul scheme utilizing the non-linearity of MZM. The EVM can be reduced by 6.17% and 2.19% at-9dBm ROP for BtB and after 10km SSMF transmission, respectiv... 详细信息

ISBN: (数字)9781665458986

ISBN: (纸本)9781665458986

关键词： Pulse amplitude modulation

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Generalized Carrier Assisted Differential Detection Receiver with Simplest Structure

Generalized Carrier Assisted Differential Detection Receiver...

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2022 Conference on Lasers and Electro-Optics Pacific Rim, CLEO/PR 2022

作者： Zhu, Yixiao Hu, Weisheng State Key Laboratory of Advanced Optical Communication System and Networks Shanghai Jiao Tong University Shanghai200240 China

关键词： Electronics industry

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optical pulse processor based on achromatic time lens assisted by compound phase modulation

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Optics Express 2025年第10期33卷 20754-20766页

作者： Liu, Huabei Xie, Qijie Ma, Chunyang Na, Quanxin Wang, Chaopeng Zuo, Guomeng Shi, Xiaobin Du, Jiangbing Wang, Lei Shao, Liyang Department of Electrical and Electronic Engineering Southern University of Science and Technology Shenzhen518055 China Peng Cheng Laboratory Shenzhen518055 China State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic Engineering Shanghai Jiao Tong University Shanghai200240 China

The time-lens based optical pulse processors have been widely applied in ultrafast optical processing and quantum optics. Conventionally, the time-lens systems used to adopt a sinusoidal waveform to approximate quadratic temporal phase modulation. It inevitably restricts the duration of a linear chirp, and thus limiting the temporal aperture to realize perfect Fourier transform. In this paper, we propose what we believe to be a novel achromatic time lens to expand the temporal aperture by using compound phase modulation. The achromatic time lens first compresses an optical pulse via a traditional time lens, and then introduces a linear chirp over the pulse duration by applying compound waveform consisted of the weighted fundamental and second harmonics. Numerical results proved that the synthesized linear chirp can be maintained over the pulse duration, when the duty cycle of the incident pulse increased from 15% to 72%. It indicates the effective temporal aperture to be expanded significantly. Experimentally, we have applied the achromatic time lens system to process a Gaussian pulse without distorting the pulse shape. The pulse width is compressed from 34 ps to 2.2 ps, while the spectral bandwidth is broadened from 0.32 nm to 1.6 nm. Both the temporal waveform and spectral envelope are maintained. The achromatic time lens scheme exhibits potential integration for supporting on-chip pulse processing with large time aperture. © 2025 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.

关键词： Quantum optics

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Single-Core 7.2-Tb/s (800-Gb/s×9) MDM Self-Homodyne Coherent Transmission over Weakly-Coupled 10-Mode Fibre 49

Single-Core 7.2-Tb/s (800-Gb/s×9) MDM Self-Homodyne Coheren...

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49th European Conference on optical Communications, ECOC 2023

作者： Qiao, Gang Long, Chengbin Yang, Yu Xu, Zhaopeng Zuo, Mingqing Wang, Shangcheng Liu, Lulu Shen, Lei Luo, Jie Ji, Honglin He, Zhixue Chen, Zhangyuan Hu, Weisheng Li, Juhao Peng Cheng Laboratory Shenzhen China State Key Lab of Advanced Optical Communication Systems and Networks Peking University Beijing00871 China State Key Lab of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai200240 China State Key Laboratory of Optical Fibre and Cable Manufacture Technology YOFC Wuhan China

ISBN: (纸本)9781839539954

We propose a mode-division-multiplexing (MDM) self-homodyne coherent system over weakly-coupled multiple-ring-core 10-mode fibre and experimentally demonstrate single-core 7.2-Tb/s (5.64-Tb/s net rate) transmission with 800-Gb/s data rate for each of the 9 information-bearing modes using 80-GBaud probabilistic constellation-shaped 64-QAM signals. © The Institution of Engineering & Technology 2023.

关键词： Single mode fibers

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Topologically Protected Entangled Biphoton states in High-order Topological Insulators

Topologically Protected Entangled Biphoton States in High-or...

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2023 Conference on Lasers and Electro-Optics, CLEO 2023

作者： Hu, Chenhua Jiang, Zhen Xi, Chaoxiang Wang, Hui He, Guangqiang State Key Laboratory of Advanced Optical Communication Systems and Networks School of Physics and Astronomy Shanghai Jiao Tong University Shanghai200240 China State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic Engineering Shanghai Jiao Tong University Shanghai200240 China

We demonstrate different structures of high-order topological insulators supporting topologically protected biphoton states and theoretically explained that the photon pairs generated from the four-wave mixing (FWM) p... 详细信息

ISBN: (纸本)9781957171258

关键词： Quantum entanglement

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